Horseshoe-calk.



No. 800,142. PATENTED SEPT.I 20, 1905.

E. FORKEY. HORSESHOE GALK.

APPLICATION FILED JAN.11, 1905.

,- UNITED -sTATEs PATENT oEEIoE.

EDWARD VFORKEY, OF MINNEAPOLIS, MINNESOTAASSIGNOR OF ONE- Specification of Letters Patent.

Patented Sept. 26, 1905.

Application filed January 11, 1905. Serial No. 240,535

To all whom it Magnan/cern; C

' Beit known that I, EDWARD FoRKEY, of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in Horseshoe-Calks, of which the following is a specication.

My invention relates to horseshoe-calks designed to beremoved from the shoe without taking the shoe 0E the horses foot. In calks of this type, particularly those known as the Never slip, a shoulder is provided at the base of the calk to be engaged by the wrench when it is desired to remove the calk from the shoe or to place it on the shoe. It sometimes happens, however, that a calk will become so badly Worn that there will not be suliicient surface left for the wrench to engage, and in such a case it is necessary to remove the shoe from the foot and drill out the shank of the worn calk.

The 'object of my invention is to provide a calk that is capable of being removed from the shoe Without taking the shoe off the foot, and even when the point of the calk is worn downclose to the shoe.

The invention consists generally in providing a shoe-calk with a socket that is exposed for the insertion of a tool when the calk is worn down to a predetermined point.

In the accompanying drawings, forming part of this specification, Figure 1 is a perspective view of a portion of a horseshoe, showing the calk secured thereon. Fig. 2 is a similar view showing the calk worn down to a point near the shoe. Fig. Sis an end view of the shank of the calk. Fig. 4 is a sectional View through the calk when badly worn. Fig. 5 is a similar View showing the calk before it has been worn down. Fig. 6 is a perspective View illustrating the manner of inserting a tool into the socket for the purpose of removing the worn-out calk.

In the drawings, 2 represents a portion of a horseshoe of the ordinary type, which is provided with a threaded hole 3 to receive the correspondingly threaded shank 4 of the n wearing-surface 5 of the calk, having a Hange or shoulder 6 at its base, that is engaged by the wrench for the purpose of inserting or removing 'the calk. The usual steel center pin 5 is provided in a hole in said Wearing surface, being driven therein from the outer end of said surface, with its inner end terminating even with the said gripping-surface.

When the calk 'is in use, the blow of the horses foot upon the ground or pavement will Serve to drive the center pin more securely into the calk and prevent it from working loose therein or falling out. These calks will only wear a short time, particularly on frozen ground or a hard pavement, and it is necessary to watch them very closely or they will be worn down so near to the shoe that it Will be`impossible to remove them with a wrench, and it will become necessary to take off the shoe and drill out the shank of the worn calk.

To obviate all this annoyance and difficulty inl cident to the use of these removable calks, I provide a socket 7, longitudinally arranged in the shank 4 and extending therethrough from one side of the shoe to the other. I have shown this socket square in cross-section; but

it may be of any suitable shape and size preferred. The inner end of the socket Will be exposed, as indicated in Figs-2 and 4, when the Wearing-surface and center pin are worn down to a point even with the gripping-surface or shoulder', and a tool, such as indicated by reference-numeral 8 in Fig. 6, can

then be inserted into the shank and revolved by means of the wrench 9 and the shank of the worn 'calk easily and quickly removed necessary to recut the same, and not only requires considerable labor, but also frequently causes the enlargement of the hole, so that a new calk will not tit tightly therein. This objection to the shoe-calk ordinarily used is entirely obviated by my invention, as the shank of the worn-out calk can be easily and quickly removed Withoutany danger of injuring the threads in the shoe.

I claim as my inventioni The combination, with a horseshoe having a threaded hole, of a calk having a threaded shank at one end to fit said hole and a wearing-surface at its other end, and a socket eX- tending lengthwise of said calk from end to IOO end through said shank and Wearing-surface, y

tion of the socket included within said weardown to a predetermined point said shanking-surface and polygonal in cross-section and socket will be exposed to allow the insertion of greater length than the thickness of said of a removing-tool therein.

shoe, and the portion of the socket included In witness whereof l have hereunto leet my 5 within said wearing-surface being provided hand this 7th day ol'l Jennery, 1905.

with a center pin fitting snugly therein, the ,T/ f r inner end of said pin terminating at the in- LD *UMD LUNGA ner end of the enlarged portion of the socket lVitnesses: in said shank and outside the plane of the shoe RICHARD PAUL,

IO whereby when said surface and pin are worn C. MACNAMARA. 

